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F sharp (F#) is the note F raised by one semitone using a sharp accidental. On the piano, F sharp is played on the first black key in the group of three black keys.
What is F sharp?
F sharp is enharmonically equivalent to G-flat (G♭) in the equal temperament tuning system. Although both notes sound identical, F sharp is written when the harmonic or melodic context requires the note to remain a form of F.
F sharp appears in many major and minor keys, including G major, D major and E minor, where correct note spelling is essential for maintaining the structure of the scale.
How is F sharp used in piano playing?
F sharp is one of the most frequently encountered black keys on the piano. Becoming familiar with its position helps pianists play scales, chords and arpeggios accurately in many common keys.
Understanding F sharp also improves music reading and strengthens your knowledge of key signatures, harmony and enharmonic spelling.